It maybe because you have a nasty on your system, that error number was connected to a worm called "WORM_KLEZ.E", or one of its variations, so it's important to run a scan if only to eliminate the possibility of a virus. Try and see if you can run a scan here, if you can than go back to Trend Micro and run their scan too. Post your results. Good luck.
Free Online Virus Scan - BitDefender Online Scanner